Cerner Corporation Breach Incident Score: Analysis & Impact (CERAUL1766771763)

In this Rankiteo incident briefing, we review the Cerner Corporation breach identified under incident ID CERAUL1766771763.

The analysis begins with a detailed overview of Cerner Corporation's information like the linkedin page: https://www.linkedin.com/company/cerner-corporation, the number of followers: 393743, the industry type: IT Services and IT Consulting and the number of employees: 12253 employees

After the initial compromise, the video explains how Rankiteo's incident engine converts technical details into a normalized incident score. The incident score before the incident was 782 and after the incident was 730 with a difference of -52 which is could be a good indicator of the severity and impact of the incident.

In the next step of the video, we will analyze in more details the incident and the impact it had on Cerner Corporation and their customers.

On 29 February 2024, Aultman Health System disclosed Data Breach issues under the banner "Aultman Health System Medical Data Breach".

Aultman Health System notifies patients of a third-party data breach that may have compromised personal information such as names, Social Security numbers, and certain medical records.

The disruption is felt across the environment, affecting Cerner Corporation system (third-party IT provider), and exposing Names, Social Security numbers, medical record numbers, doctors, diagnoses, medicines, test results, images, care and treatment.

In response, teams activated the incident response plan, and stakeholders are being briefed through Delayed notification to patients as directed by law enforcement; individual notification letters with engagement numbers.

The case underscores how Ongoing, with advisories going out to stakeholders covering Law enforcement directed delayed notification to avoid impeding the probe.

Finally, we try to match the incident with the MITRE ATT&CK framework to see if there is any correlation between the incident and the MITRE ATT&CK framework.

The MITRE ATT&CK framework is a knowledge base of techniques and sub-techniques that are used to describe the tactics and procedures of cyber adversaries. It is a powerful tool for understanding the threat landscape and for developing effective defense strategies.

Rankiteo's analysis has identified several MITRE ATT&CK tactics and techniques associated with this incident, each with varying levels of confidence based on available evidence. Under the Initial Access tactic, the analysis identified Trusted Relationship (T1199) with high confidence (90%), with evidence including third-party IT provider, Cerner Corporation, and unauthorized access to a Cerner system. Under the Credential Access tactic, the analysis identified Steal Application Access Token (T1528) with moderate to high confidence (70%), supported by evidence indicating access to electronic medical records system implies possible token abuse and Valid Accounts: Cloud Accounts (T1078.004) with moderate to high confidence (80%), supported by evidence indicating unauthorized access to Cerner system (likely cloud-based). Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with high confidence (90%), supported by evidence indicating unauthorized party accessed and copied data to an external location and Transfer Data to Cloud Account (T1537) with moderate to high confidence (70%), supported by evidence indicating data copied externally (likely to attacker-controlled cloud storage). Under the Impact tactic, the analysis identified Data Destruction (T1485) with lower confidence (30%), supported by evidence indicating no evidence of destruction, but data was copied (implied exfiltration) and Data Manipulation: Transmitted Data Manipulation (T1565.002) with lower confidence (40%), supported by evidence indicating no evidence of manipulation, but unauthorized access occurred. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.